メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.162524375658 35.0813853219118, 137.162647657334 35.0823318530707, 137.16368942553 35.0822417461288, 137.164374771239 35.0825910788681, 137.16334671491 35.0825910472967, 137.161411829245 35.082516312089, 137.161345735825 35.0819815640376, 137.162193053806 35.0819040640451, 137.162128946734 35.0814229101452, 137.162524375658 35.0813853219118)) ^^http://www.opengis.net/ont/geosparql#wktLiteral